Are you using the correct cable?- Please make sure you are using the correct cable for the device. Many cables may look very similar, but have completely different properties. Please read the Quick Guide above.

There might be a temporary disturbance with the GSM network.-Wait a couple of minutes and then try again. If you are having recurring problems with the GSM network, please contact our support.

Check if the GSM reception is better in a new location.- Try moving the diasend® Transmitter to another location where the GSM reception might be better (e.g. close to a window).

The diasend® Transmitter might need to be rebooted.- Unplug the unit and then plug it in again.